French hunt for 2 in attack on paper; Paris mourns victims

PARIS (AP) - With tensions high across Paris, French authorities hunted today for two heavily armed brothers they feared would strike again after the methodical killing of 12 people at a satirical newspaper that caricatured the Prophet Muhammad. France's prime minister said the possibility of a new attack "is our main concern" and announced several overnight arrests as the country began a day of national mourning.